Question

Find the simple interest percent to yield $100 interest in 5 years when $500 is invested.

Answer 1

I = Prt

You have I = 1000, t = 5, and P = 500

Go!

Answer 2

100 = 500r(5)

Answer 3

That's it. Now solve for r.

Answer 4

How do you solve for r?

Answer 5

Division. First by 500 and then by 5.

Answer 6

100/500? 100/5?

Answer 7

Okay, we need to assess something...

You had no trouble with the substitution.

I = Prt ==> 100 = 500*r*5

But you appear never to have seen a solution of such an equation. Generally, youget both these things at about the same time.

This is a very odd combination. I need more information. Why are you taking this class? How much experinece have you in Algebra? First course? Maybe only course was 40 years ago?

Answer 8

I get confused. Geesh

Answer 9

They are just questions. No harm inanswering them.

"=" has a well-used property. There are official ways to say it, but most practically, if you do the same thing to both sides, you're good.

100 = 500*r*5

Divide both sides by 500. Let's see what you get.